Proceedings ArticleDOI
Equivalent electrical circuit model of Terahertz photoconductive antenna receiver in a pulsed system
Jitendra Prajapati,Mrinmoy Bharadwaj,Amitabh Chatterjee,Ratnajit Bhattacharjee +3 more
- pp 186-189
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TLDR
In this paper, an effort has been made to analyze the performance of a photoconductive antenna as a receiver by modeling an equivalent electrical circuit of it, which is based on the physics involved in its operation.Abstract:
Photoconductive antenna (PCA), due to its simple and compact structure, is emerging in recent times as a popular device for generation of Terahertz (THz) frequencies. The working of PCA is based on the optical-to-electrical power conversion technique. The main advantage of the PCA is that it can be used both as a source as well as a detector with little changes in the operating mechanism. In literature, several experimental, simulation and theoretical studied are available for PCA operating as a source. However, very few experimental and simulation studies are available to analyze the performance of PCA as a receiver. In this communication, an effort has been made to analyze the performance of a PCA as a receiver by modeling an equivalent electrical circuit of it, which is based on the physics involved in its operation.read more
Citations
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Ultrabroadband terahertz field detection by proton-bombarded InP photoconductive antennas
Tze-An Liu,Ci-Ling Pan,Masahiko Tani,Makoto Nakajima,Masanori Hangyo,Kiyomi Sakai,Shin-ichi Nakashima +6 more
TL;DR: In this paper, the detection of ultrabroadband THz radiation with photoconductive antennas fabricated on proton-bombarded InP (InP:H+) substrates has been investigated.
References
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Journal ArticleDOI
Material parameter estimation with terahertz time-domain spectroscopy
TL;DR: This paper describes a robust algorithm for extracting material parameters from measured terahertz waveforms that simultaneously obtains both the thickness and the complex refractive index of an unknown sample under certain conditions.
Journal ArticleDOI
Terahertz Spectroscopy and Imaging for Defense and Security Applications
TL;DR: Terahertz (THz) radiation, which occupies a relatively unexplored portion of the electromagnetic spectrum between the mid-infrared and microwave bands, offers innovative sensing and imaging technologies that can provide information unavailable through conventional methods such as microwave and X-ray as discussed by the authors.
Terahertz Spectroscopy and Imaging for Defense and Security Applications Laboratory experiments indicate that, with more powerful sources and more sensitive detectors, terahertz techniques have great potential for detection and identification of concealed explosives.
TL;DR: THz technologies are promising for the standoff detection and identification of explosive targets and the opportunity for transformational advances in defense and security is offered.
Journal ArticleDOI
Terahertz fields and applications
Daniela Dragoman,Mircea Dragoman +1 more
TL;DR: In this article, the authors reviewed the most recent results in terahertz fields and focused on the physical principles of tera-hertz generators and receivers, underlining the link between terahethertz devices and modern technologies such as micromachining and nanotechnology.
Journal ArticleDOI
Generation of 1.5-kW, 1-THz coherent radiation from a gyrotron with a pulsed magnetic field.
TL;DR: To cover a so-called terahertz gap in available sources of coherent electromagnetic radiation, the gyrotron with a pulsed solenoid producing up to a 40 T magnetic field has been designed, manufactured, and tested.